Boiler-cleaner and circulating apparatus



(No Model.)

T. GRANEY.

BOILER CLEANER AND GIRGULATING APPARATUS.

Patented Feb. 28,1882.

N. PETERS. Pholo-Lillwgnpher. Wnhinglcn, 0.6.

UNITED. STATES PATENT OFFICE.

THOMAS GRANEY, OF BAY CITY, MICHIGAN.

BOILER-CLEANER AND CIRCULATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 254,118, dated February 28, 1882.

I Application filed July 8, 1881. (No model.)

T 0 all whom it may concern Be it known that 1, THOMAS URANEY, of Bay City, in the county of Bay and State of Michigan, have invented an Improvement in Boiler-Cleaners and Oirculatin g Apparatus, of which the following is a specification.

The nature of this invention relates to certain new and useful improvements in the construction of devices designed to be attached to steam-generators for the purpose of removing impurities which are separated from the water during the process of-steam-making, and thus to prevent the incrustation of the boilers.

The invention consists in the peculiar construction, arrangement,- and various combinagenerator or boiler. Near the waterline and within the boiler-shell I secure a coil of pipe, 0, one end of which projects through the boiler, and is connected with and forms a part of the feed-water pipe B, while its opposite end extends through the shell and leads into the drum D, and has secured to it within such drum one member of the injector F, while the opposite member of the injector F is secured to a pipe, G, which enters the opposite side orend of the drum, passing thence down and into the boilershell below the water-line, and in boilers which are provided with a mud-pipe it is connected thereto.

His a surface-pan located within the boiler at about the water-line, or just below it, and is secured to the end of a pipe, I, which extends thence through the boiler into the drum 1), as shown in dotted lines.

The pipe G and feed-pipe B may be provided with valves a b c, as shown, and drum D may be provided with an exhaust-pipe or blow-off pipe and valve J if desired.

In practice we will suppose the valves a 0 to be opened and the valve 1) closed, a proper vconnection being made at d with a pump or injector for supplying water to the boiler. During the process of generating the steam, and

while supplying the boiler with water, it passes through the feed-water pipe B into the coil (1 within the boiler, and thence to the injectordrum D, through which it is forced by the action of the pump through theinjector at a great velocity, passing out through the pipe G, and thence into the boiler below the water-line. During this action the rapid passage of the feed-water through the injector Fin the drum D createsa suction and circulation through the pipe I, as in a siphon, drawing directly from the surface-pan and creating a circulation of water through such pipe I into the drum D, from which a portion of the water contained therein is continually being passed ofl through the pipe G into the boiler, while sediment and other foreign matter will settle to a great extent in the bottom of the drum, from which it may be blown off, as may be desired, through the pipe J; and in this construction there is a continuous circulation of water from the surface of the water in the boiler through the various pipes and the injector-drum back into the boiler, continually separating the impurities from the water, which are held in suspension therein and are gra'duallydeposited within the drum. Should it befound that this drum was insufficient to receive the amount of deposit of foreign matter-as where roily ormuddy water is necessarily usedanother drum may be interposed between this drum and the boiler; and it will be found that a generator provided with this attachment will very rarely become incrusted, as the circulation is so positive and complete that the impurities are deposited within the drums provided for the purpose.

If desired, the coil 0 within the boiler-shell may be entirely omitted and the feedwater pipe be connected directly to the injector without departing from the spirit of my invention, as the one function performed by the coil is that the water may be somewhat heated before it is delivered to the boiler. Hence it has no necessary connection with the injector-drum, but assists in its effective working. While my injector-drum is placed near the top of the and its water-supply pipe, the drum D, which incloses an injector, F, said drum being c011- nected to the boiler hy the pipe G and to the surface-pan within the boiler by a pipe, I, sub- 15 stantially as and for the purposes set forth.

THOS. CRANEY.

\Vitnesses:

H. S. SPRAGUE, R. S. MALLORY. 

